Just as “extremists” from other religion claiming they belong to it. We’re just less accustomed to seeing people claiming being chrisitans doing it. They obviously aren’t but as time will go on more and more christians will get criticized for being christians because “look what your fellow christians do!” Rings any bell? “But if Christians behave that way it’s because it’s rooted in their religion!”. And maybe it is… Who knows, but what these people do seem very non-christian.